What are easy-to-understand definitions I could use for these list of terms?

In protein synthesis DNA pretty much tells the cells to produce amino acids and proteins. (Protein Synthesis = creation of proteins using DNA and RNA). Before the creation of protein begins transcription occurs (DNA is transferred into RNA) in which the RNA polymerase acts as an "unzipper" and breaks the DNA strand into two parts. The one half of the DNA strand (the template strand) is copied by the RNA polymerase and creates a messenger RNA (mRNA).